document.write( "Question 1208676: Why is the cardinality of the empty set { Ø } equal zero? \n" ); document.write( "
Algebra.Com's Answer #847079 by ikleyn(52778)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "The cardinality of the empty set is zero, because the empty set has zero elements.\r
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\n" ); document.write( "\n" ); document.write( "All these profound exercises about empty set remind me
\n" ); document.write( "the expression \"treading water in a mortar\".\r
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